CS5150H datasheet(6/17 Pages) ONSEMI

No de pièce	CS5150H

Description	CPU 4?묪it Synchronous Buck Controller

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Fabricant	ONSEMI [ON Semiconductor]

Site Internet	http://www.onsemi.com

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CS5150H

http://onsemi.com

6

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+

−

+

−

+

VCC1

SS

VID0

VID1

VID2

VID3

VFFB Low

Comparator

VFFB

Fast Feedback

LGND

Slow Feedback

PWM

Comparator

SS Low

Comparator

SS High

Comparator

4 BIT

DAC

VCC1 Monitor

Comparator

Error

Amplifier

VCC1

VCC2

COFF

VGATE(H)

VGATE(L)

PGND

FAULT

Latch

PGND

R

S

Q

R

S

Q

R

S

Q

Latch

PMW

COFF

One Shot

Off−Time

Timeout

Time−Out

Timer

Edge Triggered

Extended

Off−Time

Timeout

Normal

Off−Time

Timeout

Maximum

On−Time

Timeout

(30 μs)

GATE(H) = ON

GATE(H) = OFF

2.0 μA

60 μA

5.0 V

0.7 V

2.5 V

1.0 V

−

+

−

+

−

3.90 V

3.85V

VFB

COMP

Figure 2. Block Diagram

PWM COMP

APPLICATIONS INFORMATION

THEORY OF OPERATION

V2 Control Method

The V2 method of control uses a ramp signal that is

generated by the ESR of the output capacitors. This ramp is

proportional to the AC current through the main inductor

and is offset by the value of the DC output voltage. This

control scheme inherently compensates for variation in

either line or load conditions, since the ramp signal is

generated from the output voltage itself. This control

scheme differs from traditional techniques such as voltage

mode, which generates an artificial ramp, and current mode,

which generates a ramp from inductor current.

Figure 3. V2 Control Diagram

COMP

VFFB

Reference

Voltage

+

PWM

Comparator

Ramp

Signal

Error

Amplifier

Error

Signal

Output

Voltage

Feedback

VFB

VGATE(H)

VGATE(L)

E

C

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Numéro de pièce similaire - CS5150H

Fabricant	No de pièce	Fiches technique	Description
Cherry Semiconductor Co...	CS5150H	322Kb / 14P	CPU 4-Bit Synchronous Buck Controller
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Description similaire - CS5150H

Fabricant	No de pièce	Fiches technique	Description
ON Semiconductor	CS5150	631Kb / 18P	CPU 4?묪it Synchronous Buck Controller July, 2006 ??Rev. 5
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	CS5165H	722Kb / 21P	5?묪it Synchronous CPU Buck Controller July, 2006 ??Rev. 5
	CS5160	584Kb / 18P	CPU 5?묪it Synchronous Buck Controller July, 2006 ??Rev. 6
	CS5158	607Kb / 16P	CPU 5?묪it Synchronous Buck Controller July, 2006 ??Rev. 6
	CS5155H	623Kb / 17P	CPU 5?묪it Synchronous Buck Controller July, 2006 ??Rev. 3
	CS5157	603Kb / 16P	CPU 5?묪it Synchronous Buck Controller July, 2006 ??Rev. 7
	CS5165	718Kb / 21P	5?묪it Synchronous CPU Buck Controller July, 2006 ??Rev. 4
	CS5155	635Kb / 18P	CPU 5?묪it Synchronous Buck Controller July, 2006 ??Rev. 4

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CS5150H Fiches technique(PDF) 6 Page - ON Semiconductor

CS5150H Fiches technique(HTML) 6 Page - ON Semiconductor

Numéro de pièce similaire - CS5150H

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